Select the 4-subset from {1, 2, 3, 4, 5, 6, 7, 8, 9} that is the next one in lexicographic order after {2, 4, 6, 7}. {2, 4, 6, 8} {2, 4, 6, 9} {2, 4, 7, 8} {2, 5, 6, 7}
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Step 1: List out the elements in lexicographic order: {1,2,3,4,5,6,7,8,9} Show more…
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